Sewing-machine attachment



(No Model.)

A. H. WILLIAMS. SEWING MACHINE ATTACHMENT.

Patented'July 27,.1897.

Inuer aor M NITED STATES PATENT FFIQE.

ARTHUR H. \VILTJAMS, OF FORT .PLAIN, NE\/V YORK.

SEWlNG-MACHlNE ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 587,252, dated July 27,1897.

Application filed August 28, 1896. Serial No. 604,199. (N model.)

To aZZ whom it may concern.-

Be it known that I, ARTHUR H. WILLIAMS, a citizen of the United States,residingat Fort Plain, in the county of Montgomery and State of NewYork, have invented certain new and useful Improvements inSewing-Machine Attachments; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to sewing-machines, and more particularly to thatclass which are designed especially for sewingleather goods; and it hasfor its general object to provide an attachment for leather-sewingmachines which will enable the same to sew the ends in the leathertool-bags in common use on bicycles or in other leather or stiff goodswhich have two straight sides and two curved or rounded sides or in thesewing of which it is necessary to sew a straight seam and a curved seamforming a continuation of the straight seam, and vice versa.

Other objects and advantages of the invention will be fully understoodfrom the following description and claims, when taken in conjunctionwith the accompanying drawings, in which Figure 1 is a detail elevationwith parts in section, illustrating a portion of a Singer leather-sewingmachine equipped with my improved attachment. Fig. 2 is a detailsectional view illustrating the work-holdin g arm and the rotatable diskcarried thereby. Fig. 3 is an enlarged plan view of the spring which isdesigned to exert a pressure against the work-holding arm, so as toovercome the friction of the needle, which ordinarily has a tendency tolift the work from the feed mechanism. Fig. 4 is a plan view of theadjustable bracket which supports the work-holding arm; and Figs. 5 and6 are detail sections taken in the planes indicated by the dotted lines00 a: and y g respectively, of Fig. 1.

In the said drawings similar letters designate corresponding parts inall of the several views, referring to which- A indicates the head, Bthe bed, and O the shuttle and feed-mechanism carrying arm or cylinderof a Singer leather-sewing machine,

and D indicates the bracket of myimproved attachment. This bracket D, asbetter shown in Figs. 1 and 4, comprises the horizontal arm and thevertical or approximately vertical arm I), which rises from the outerend of the arm a and is provided with the longitudinal transversely-disposed slot 0 for a purpose presently described. The arm a is alsoprovided with a longitudinal slot d, as shown, for the passage of thebolts ef, which adjustably connect the bracket to the machine-bed B, soas to permit of said bracket being adj nsted and adj ustably fixed withrespect to the arm 0 or the stitch-forming mechanism to suit differentlengths of work. I do not desire, however, to be understood as confiningmyself to the specific manner described of adj ustably connecting thebracket to the machine-bed, as any suitable construction may be employedwhich will admit of the bracket being adjusted and adjustably fixed inthe manner and for the purpose described.

E indicates the support for the work-holder or work-holding arm F. Thissupport E has a bore g for the reception of the arm F, and a set-screw htoadj ustably fix the arm in said bore, and it also has a shank 'L',which is threaded for a portion of its length, as shown. The said shank2' extends through the slot 0 of the bracket-arm Z2, and it is providedat one side of said arm with a wing-nut j and is also provided uponopposite sides of the arm I) with washers 7c, as'shown in Fig. 5. Thisconstruction permits of thework-supporting arm F being adjusted so as torest at various angles, according to the angle of stitch desired, and italso permits of the support'E and the arm F being rocked, and furtherpermits of the arm F being adjusted endwise to permit of a readyplacement of the work thereon, as will be presently described.

The arm F is provided in its end contiguous to the stitch-formingmechanism with a socket Z, in which is arranged a coiled spring m andalso the stem n of the rotatable disk G, a disk 19 being looselyinterposed between the spring and the stem, and the end of the stembeing rounded, as shown, so as to reduce the friction and permit of freerotation of the disk G. The coiled spring on isv designed and adapted toexert sufficient pressure against the disk G to overcome any uneventhickness that there may be in the leather and thereby keep the seam atan equal distance from the edge of the article entirely around the same,which is an important advantage. The disk G is designed and adapted tohold the pieces of leather at all times in the proper position withrespect to the organized stitch-forming and feed mechanism, and to dothis with as little friction as possible it should turn with thearticle, to which end I mill or roughen the periphery of the disk andalso preferably provide the face of the same with an annular raisedmilled portion 9', as better shown in Fig. 2, of leather.

In order to overcome the friction of the needle, which on its upstrokehas a tendency to lift the work from the feed mechanism, I provide thespring H, which is designed to exert an upward pressure against theouter end of the arm F and thereby clamp the work between the disk G andthe arm G of the machine. This spring is adjustably connected to themachine-bed B by the screws f s, which take through the slots 25, or inany other suitable manner that will permit of its being adjusted inconformity to the adjustment of the arm F, and it is provided at itsfree end with the concave portion 2/, which receives the outer portionof the arm F. Thus it will be seen that the spring I-I exerts a constantupward pressure against the outer end of the arm F and yet does notinterfere with the said arm being moved endwise through the bore 1 ofthe support E when work is to be placed upon or removed from the saidarm.

The tension of the spring H maybe readily regulated by the wing-nut r;011 the boltf.

It will be seen from the foregoing that in virtue of the employment ofthe disk G, arranged as described, the machine is enabled to sew theends in bicycle tool-bags and in other articles of leather or otherstiff material which have two straight sides and two curved or roundedsides, the body portion of the bags being placed upon the arm F and theend piece against the face of the disk G and within the edge of thebodyportion, and the bag being fed around the arm F until the attachmentof the end to the body portion is completed entirely around the bag.

IVith a disk G of small diameter it will be observed that the operatoris enabled to turn a sharp corner and sew a continuous seam one portionof which is at right angles, or approxi mately so, to the other. Forthis reason I do not desire to be understood as confining myself to theemployment of a disk of any particular diameter. I also do not desire tobe understood as confining myself to using my improvements inconjunction with the Singer sewing-machine, as they may be used inconjunction with any leather or other sewing machine with which they areadapted to cooperate to effect the end desired.

so as to enable it to grip both portions Having described my invention,what I claim is- 1. In a sewing-machine for the purpose described thecombination with an organized stitch-forming mechanism and feedmechanism; of a movable work-holder, a springpressed disk carried bysaid work-holder and arranged at the end of the same contiguous to thestitch-forming and feed mechanisms, and a spring exerting a pressureagainst the workholder so as to press the periphery of the disk towardthe feed mechanism, substantially as and for the purpose set forth.

2. In a sewing-machine for the purpose described, the combination withan organized stitch-forming mechanism and feed mechanism, of a movablework-holdcr, a springpressed disk carried by said work-holder andarranged at the end of the same contiguous to the stitch-forming andfeed mechanisms and having its periphery milled and also havin g theannular milled portion on its face, and a spring exerting a pressureagainst the workholder so as to press the periphery of the disk towardthe feed mechanism, substantially as and for the purpose set forth.

3. In a sewing-machine for the purpose described, the combination of thebed, the organized stitch-forming mechanism and the feed mechanism; ofthe bracket or frame connected to the bed, the work-holding arm, thesupport connected to the bracket or frame and having a bore reeeivin gthe work-holding arm and the set-screw for engaging said arm, means bywhich the said support is adapted to be rocked and the spring connectedto the bed and having the concave portion receiving the rear portion ofthe work-holding arm, substantially as and for the purpose set forth;

4. In a sewing-machine for the purpose described, the combination of thebed, the organized stitch-forming mechanism and the feed 1n eehanism,the bracket or frame adjustably connected with the bed so as to permitof its adjustment toward or from the organ ized stitch-forming mechanismand the feed mechanism, the work-holding arm, the support adjustablyconnected to the bracket or frame so as to permit of its vertical adjustment thereon and adapted to be rocked and having a bore receiving thework-holding arm and the set-screw for engaging said arm, and the springadjustably connected to the bed so as to permit of its adjustment in thesame direction as the work-holdin g arm and having the concave port-ionreceiving the rear portion of the work-holding arm, substantially asspecified.

In testimony whereof I affix my signature in presence of two witnesses.

ARTHUR II. \VILLIAMS.

Vitnesses:

HARVEY DUNKEL, WILLIAM H. Ross.

